warning placards 警告标牌
Placards of wood or plastics 木制或塑料制招牌
PLACARDS AND MARKINGS 标牌和标志 ; 标牌和标记
PLACARDS & MARKINGS 铭牌及标志
Placards of paper or cardboard 招贴画或纸板
Interior Placards & Markings 内部铭牌和标志
Exterior Placards & Markings 外部铭牌和标志
Holding Up Placards Reading 上手持标语牌读
bilingual placards 双语标牌
·2,447,543篇论文数据，部分数据来源于NoteExpress
N-COUNT A placard is a large notice that is carried in a march or displayed in a public place. 标语牌; 布告
The protesters sang songs and waved placards.
抗议者们唱着歌并挥舞标语牌。
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